code: def test_constructor_sparse_dtype(self):
      result = SparseArray([1, 0, 0, 1], dtype=SparseDtype("int64", -1))
      expected = SparseArray(
          [1, 0, 0, 1], fill_value=-1, dtype=np.int64
      )
      tm.assert_sp_array_equal(result, expected)
      assert result.sp_values.dtype == np.dtype("int64")
  
imports: import numpy
  import pytest
  from pandas._libs.sparse import IntIndex
  import pandas
  from pandas import SparseDtype, isna
  import pandas._testing
  from pandas.core.arrays.sparse import SparseArray
label_desc: Use image node_id 3 for calling the TestConstructors obj's underlying member method code with example usage: obj.test_constructor_sparse_dtype() without return types